Tip-proof sprinkler stand



FIG. 1 is a top plan view of a tip-proof sprinkler stand showing my new design;

FIG. 2 is a right side elevational view, the left side being a mirror image thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevational view thereof. 

The ornamental design for a tip-proof sprinkler stand, as shown and described. 